DX-2174: enhance schedule API response fields and update documentation

[CahidArda]

No description provided.

[linear]

DX-2174 qstash-js/py: add missing fields to types

[alitariksahin]

we could also improve example response, when I tried the endpoint I got:
{
"createdAt": 1759390404968,
"scheduleId": "scd_6sRcAowg5YVHAJeCiDKPQTjBKjLV",
"cron": "0 0 * * *",
"destination": "https://example.requestcatcher.com/test",
"method": "POST",
"header": {
"Content-Type": [
"application/json"
]
},
"body": "test",
"retries": 3,
"delay": 10,
"lastScheduleTime": 1759881602099,
"nextScheduleTime": 1759968000000,
"lastScheduleStates": {
"msg_7YoJxFpwkEy6sUx4u582Kz18uqY9eqBEyAdyfJ2RBdibyNmLjVQfD": "SUCCESS"
},
"callerIP": "176.361.161.320",
"isPaused": false,
"parallelism": 0
}

[CahidArda]

Fixed! @alitariksahin